Technology · PyPI
anyio (PyPI) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 3 vulnerabilities in anyio (PyPI): 0 in the last 7 days and 3 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-63374, was published on 22 September 2026. Nothing in the last four weeks, down from 3 vulnerabilities in the four before. 0 critical against 1.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 1
- Exploited in the wild
- 0
About anyio (PyPI)
Python library providing asynchronous I/O abstractions for concurrent network operations.
Latest anyio (PyPI) vulnerabilities
- CVE-2026-63374: AnyIO TLSStream IDNA 2003 host name encoding certificate spoofingcriticalCVSS 4EPSS 0.3%
- CVE-2026-64847: AnyIO process-pool workers indefinite blocking on undrained stderrmediumCVSS 4EPSS 0.2%
- CVE-2026-63349: AnyIO run_process/open_process privilege dropping bug with extra_groupshighCVSS 4EPSS 0.1%
Most severe anyio (PyPI) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-63374: AnyIO TLSStream IDNA 2003 host name encoding certificate spoofingcriticalCVSS 4EPSS 0.3%
- CVE-2026-63349: AnyIO run_process/open_process privilege dropping bug with extra_groupshighCVSS 4EPSS 0.1%
- CVE-2026-64847: AnyIO process-pool workers indefinite blocking on undrained stderrmediumCVSS 4EPSS 0.2%
Vulnerabilities per week
Nothing in the last four weeks, down from 3 vulnerabilities in the four before. 0 critical against 1. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 2 | 0 | |
| 21 Sep 2026 | 1 | 1 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many anyio (PyPI) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/anyio)<a href="https://junglewise.ai/threats/technologies/anyio"><img src="https://junglewise.ai/threats/technologies/anyio/badge.svg" alt="anyio (PyPI) vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/anyio.json, and this page as text at https://junglewise.ai/threats/technologies/anyio.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "anyio (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/anyio, 13 November 2026.